Fix JPEGImageEncoder memory leak

third_party/WebKit/Source/core/html/canvas/CanvasAsyncBlobCreator.cpp

Index: third_party/WebKit/Source/core/html/canvas/CanvasAsyncBlobCreator.cpp
diff --git a/third_party/WebKit/Source/core/html/canvas/CanvasAsyncBlobCreator.cpp b/third_party/WebKit/Source/core/html/canvas/CanvasAsyncBlobCreator.cpp
index 2d3ead5190745b4e485ba8e54594294e7344a3da..b78c07ede80ac8651b5f3c80181d319c7f6e4d94 100644
--- a/third_party/WebKit/Source/core/html/canvas/CanvasAsyncBlobCreator.cpp
+++ b/third_party/WebKit/Source/core/html/canvas/CanvasAsyncBlobCreator.cpp
@@ -144,9 +144,14 @@ void CanvasAsyncBlobCreator::encodeImageOnEncoderThread(double quality)
 {
     ASSERT(!isMainThread());
 
+    bool success;
     if (m_mimeType == "image/jpeg") {
-        JPEGImageEncoder::encodeWithPreInitializedState(m_jpegEncoderState.get(), m_data->data());
-    } else if (!ImageDataBuffer(m_size, m_data->data()).encodeImage(m_mimeType, quality, m_encodedImage.get())) {
+        success = JPEGImageEncoder::encodeWithPreInitializedState(m_jpegEncoderState.release(), m_data->data());
+    } else {
+        success = ImageDataBuffer(m_size, m_data->data()).encodeImage(m_mimeType, quality, m_encodedImage.get());
+    }
+
+    if (!success) {
         scheduleCreateNullptrAndCallOnMainThread();
         return;
     }